Chemistry of organosulphur compound types occurring in heavy oil sands: 5. Reaction of thiophene and tetrahydrothiophene with aqueous Group VIIIB metal species at high temperature

✍ Scribed by Peter D. Clark; Norman I. Dowling; Kevin L. Lesage; James B. Hyne

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 445 KB
• Volume: 66
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(87)90366-8

✦ Synopsis

As part of a study of organosulphur compounds in heavy oil sands, the interaction of thiophene (1) and tetrahydrothiophene (10) with aqueous solutions of Group VIIIB metal species at 20&24o"C has been _ investigated.

Thiophene was the more reactive and the greatest degree of reaction was observed with the second-and third-row members of the Group VIIIB metals. Aqueous Pt(IV) gave most reaction for both substances. Desulphurization of the sulphur compounds was significant, although conversion to more complex organic substances, including dithienyls and benzothiophene, account for > 50 wt % of the total reaction for most metal species. The presence of CO2 in the products showed that water was involved in the reaction. Reactions with thiophene produced only minor amounts of C,-C, hydrocarbons, but significant quantities were obtained from reactions with tetrahydrothiophene.